Escherichia coli QueD is a 6-carboxy-5,6,7,8-tetrahydropterin synthase.
Escherichia coli QueD is a 6-carboxy-5,6,7,8-tetrahydropterin synthase.
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DOI:
10.1021/bi9001437
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发表时间:
2009-03-24
期刊:
影响因子:
2.9
通讯作者:
Bandarian, Vahe
中科院分区:
文献类型:
--
作者:
McCarty, Reid M.;Somogyi, Arpad;Bandarian, Vahe
To elucidate the early steps required during biosynthesis of a broad class of 7-deazapurine containing natural products, we have studied the reaction catalyzed by Escherichia coli QueD, a 6-pyruvoyl-5,6,7,8-tetrahydropterin synthase (PTPS) homolog possibly involved in queuosine biosynthesis. While mammalian PTPS homologs convert 7,8-dihydroneopterin triphosphate (H2NTP) to 6-pyruvoyltetrahydropterin (PPH4) in biopterin biosynthesis, E. coli QueD catalyzes the conversion of H2NTP to 6-carboxy-5,6,7,8-tetrahydropterin (CPH4). E. coli QueD can also convert PPH4 and sepiapterin to CPH4, allowing a mechanism to be proposed.
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DOI:
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